Final answer:
The statement is accurate. The first line of 'Joy to the World' spans an octave, starting and ending on 'E'. An octave refers to the distance between one musical note and another with half or double its frequency.
Step-by-step explanation:
The statement is True. In musical terms, an 'octave' refers to the interval between one musical pitch and another with half or double its frequency. The first line of 'Joy to the World' indeed spans an octave. The line begins with the note 'E' ('Joy' to the), drops to the lower 'E' at 'world', climbs up to the higher 'E' again at 'the Lord', and finally descends to the lower 'E' at 'is come'. This range from the lower 'E' to the higher 'E' is considered an octave.
Learn more about Octave in Music